narrator: and as demand increases, john pihl is feeling closed in. pihl: we see pressure every dayhe. we have housing, residential housing slated for right up to our fence line right next to the farm. narrator: john knows farmers in the county who have sold for as much as $20,000 an acre. an offer like that could bring in $10 million for this 500-acre farm. since he now earns about $40,000 a year, e essureo sellisuildg. but for now, his concerns are holding him back. pihl: i think probably what we're mosconcerned about is thaingsre cingincrediblyast, ani hate to segs, good things get lost narrator: whether or not john continues to stay on this land, others will not resist the temptation to sell. farming is fast becoming a thing of the past in chicago's edge communities, and though local zoning regulations can moderate the eff of gwth, as the search so does development's steady push down the interstate. in north america automobiles and highways have come to dominate the landscape of human settlement. along the way, they have led to an urban developmen